US2779563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable lever valve
Assignee: Individual
•
Filing: 1951-10-20
•
Granted: 1957-01-29
•
Expires: 1971-10-20
Abstract
No abstract record available.
Inventors
- 👤 Spence Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20558; Y10T74/2057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB605286A
Cited
US2534959A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |